Influence of inorganic salts on pervaporation performance of PDMS/ceramic composite membranes

Dan Hou, Wang Wei, Shanshan Xia, Fenjuan Xiangli, Yiwei Chen, Wanqin Jin

科研成果: 期刊稿件文章同行评审

3 引用 (Scopus)

摘要

There are many significant advantages when pervaporation is used in the separation of ethanol/water system. The current studied systems are mainly the binary feed mixtures, but the real systems are commonly multi-component mixtures and might include inorganic salts and sugars, which may have effects on the pervaporation performance of the membrane. In this work the effects of three inorganic salts (NaCl, KCl and MgCl2) on the pervaporation performance of polydimethylsiloxane (PDMS)/ceramic composite membranes were studied. The results showed that the addition of inorganic salts caused simultaneously the increase of the flux and the separation factor. Among the three salts, MgCl2 had the most notable effect on the pervaporation performance. The separation factors of the tertiary system were 2.8, 2.5 and 2.4 times of those of the ethanol/water binary system for MgCl2, NaCl and KCl respectively. The experimental phenomena could be explained by the ethanol activity, which was calculated by using the Setschenow empirical equation.

源语言英语
页(从-至)389-393
页数5
期刊Huagong Xuebao/CIESC Journal
60
2
出版状态已出版 - 2月 2009

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